# Copyright 2022 ByteDance and/or its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from typing import Callable

import tensorflow as tf

_MONOLITH_GRAPH_META = "monolith_graph_meta"


def get_meta(key: str, MetaFactory: Callable):
  g = tf.compat.v1.get_default_graph()
  l = g.get_collection_ref(_MONOLITH_GRAPH_META)
  if not l:
    l.append({})
  meta_dict = l[0]
  if key not in meta_dict:
    meta_dict[key] = MetaFactory()
  return meta_dict[key]
